ignite vs fire up

ignite and fire up both are verbs.

Word	Noun	Adjective	Verb	Adverb
ignite	No	No	Yes	No
fire up	No	No	Yes	No

As verbs, ignite and fire up are synonyms defined as:

Other synonyms of ignite include heat, inflame, stir up, wake.

As verbs, fire up is a hyponym of ignite; that is, fire up is a word with a more specific, narrower meaning than ignite:

Other hyponyms of ignite include light, light up, reignite, conflagrate, enkindle, inflame, kindle, light up, flare up.

ignite (verb)	fire up (verb)
start or maintain a fire in	begin to smoke
arouse or excite feelings and passions	arouse or excite feelings and passions
cause to start burning; subject to fire or great heat
start to burn or burst into flames